Kotlin - Validating URL with custom URL scheme

Question

In my app, I can have web URL starting with "https://" or "http://" or URL with custom scheme starting with "custom://" or "testing://".

I tried using URLUtil.isValidUrl(), but this returns true only if URL starts with http or https.

How can I validate the URL with custom scheme in android?

Gorio · Accepted Answer · 2019-08-22 19:56:49Z

1

If i understand right, you just need to validate if the syntaxe is right, right ?

I did an sample here to validate URLs using Regex

val regex = "([A-Za-z]*:\\/\\/)?\\S*".toRegex()

fun isValidUrl(url: String): Boolean {
    return regex.containsMatchIn(url)
}

edited Aug 22, 2019 at 19:56

answered Aug 22, 2019 at 17:37

Gorio

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5 Comments

tech_human Over a year ago

isValidURL checks for all the other URL's mentioned. I looked at the implementation of isValidURL.

a_local_nobody Over a year ago

friendly tip: link-only answers are downvoted and not seen as answers. consider quoting the relevant parts from the links or adding this as a comment instead

tech_human Over a year ago

@Gorio - Will try this out.

tech_human Over a year ago

@Gorio - Unfortunately this returns true for invalid URL's too. For example if my URL is "test:^/something?a={123}&b={xyz}". This comes out to be a valid URL.

Gorio Over a year ago

Sure. Just adjust the regex to accept only yours URLs

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